Whole lot of changes.... here a shortlist:

- removed editors/area and put this all in screen
- added first python calls (note, a new c file for scriptlinks)
- added view3d editor callbacks (no drawing yet)
- added files in editors/interface

(Cmake and Scons has to be fixed, help welcome!)

- now areas/headers are being converted on file read
- note: previously saved 2.50 files will crash!!! (.B.blend)
- area regions are being drawn, first handler for cursor added (on edge)
- window duplicate and scale works correct for screen subdiv

Todos for me:

- need to fix things in syntax (function names) a bit still
- more operators for screen
- define how Context will work... still unresolved when it gets set
- docs!

Reviews of code structure is welcome!
There are also more todos now for others, but it can wait a couple of days

2 files changed, 127 insertions, 18 deletions

diff --git a/source/blender/blenkernel/BKE_screen.h b/source/blender/blenkernel/BKE_screen.h
index e20b00a00e7..442ef7cf003 100644
--- a/source/blender/blenkernel/BKE_screen.h
+++ b/source/blender/blenkernel/BKE_screen.h
@@ -3,15 +3,12 @@
  *	
  * $Id$ 
  *
- * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
+ * ***** BEGIN GPL LICENSE BLOCK *****
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version. The Blender
- * Foundation also sells licenses for use in proprietary software under
- * the Blender License.  See http://www.blender.org/BL/ for information
- * about this.
+ * of the License, or (at your option) any later version. 
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -29,12 +26,59 @@
  *
  * Contributor(s): none yet.
  *
- * ***** END GPL/BL DUAL LICENSE BLOCK *****
+ * ***** END GPL LICENSE BLOCK *****
  */
 #ifndef BKE_SCREEN_H
 #define BKE_SCREEN_H
 
+struct SpaceType;
+struct ScrArea;
+struct bScreen;
+struct ARegion;
+struct wmNotifier;
+
+/* spacetype has everything stored to get an editor working, it gets initialized via 
+spacetypes_init() in editors/area/spacetypes.c   */
+/* an editor in Blender is a combined ScrArea + SpaceType + SpaceData */
+
+typedef struct SpaceType {
+	struct SpaceType *next, *prev;
+	
+	char			name[32];					/* for menus */
+	int				spaceid;					/* unique space identifier */
+	int				iconid;						/* icon lookup for menus */
+	
+	struct SpaceLink	*(*new)(void);							/* calls init too */
+	void		(*free)(struct SpaceLink *sl);					/* not free sl itself */
+	
+	void		(*init)(struct ScrArea *);						/* init is to cope with internal contextual changes, adds handlers, sets screarea regions */
+	void		(*refresh)(struct bContext *, struct ScrArea *);	/* refresh is for external bContext changes */
+	
+	struct SpaceLink	*(*duplicate)(struct SpaceLink *sl);		/* after a spacedata copy, an init should result in exact same situation */
+	
+	/* read and write... */
+	
+} SpaceType;
+
+/* region type gets allocated and freed in spacetype init/free callback */
+/* data storage for regions is in space struct (also width/height of regions!) */
+typedef struct ARegionType {
+	
+	void		(*init)(const struct bContext *, struct ARegion *);		/* add handlers, stuff you only do once or on area/region changes */
+	void		(*refresh)(const struct bContext *, struct ARegion *);		/* refresh to match contextual changes */
+	void		(*draw)(const struct bContext *, struct ARegion *);		/* draw entirely, windowsize changes should be handled here */
+	
+	void		(*listener)(struct ARegion *, struct wmNotifier *);
+} ARegionType;
+
+
+void BKE_screen_area_free(struct ScrArea *sa);
 void free_screen(struct bScreen *sc); 
 
+struct SpaceType *BKE_spacetype_from_id(int spaceid);
+void BKE_spacetype_register(struct SpaceType *st);
+void BKE_spacedata_freelist(ListBase *lb);
+void BKE_spacedata_copylist(ListBase *lb1, ListBase *lb2);
+
 #endif
 
diff --git a/source/blender/blenkernel/intern/screen.c b/source/blender/blenkernel/intern/screen.c
index b41fdbba5e4..33e131606c2 100644
--- a/source/blender/blenkernel/intern/screen.c
+++ b/source/blender/blenkernel/intern/screen.c
@@ -1,9 +1,7 @@
-
-/* screen.c
- * 
+/* 
  * $Id$
  *
- * ***** BEGIN GP LICENSE BLOCK *****
+ * ***** BEGIN GPL LICENSE BLOCK *****
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -22,9 +20,7 @@
  * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
  * All rights reserved.
  *
- * The Original Code is: all of this file.
- *
- * Contributor(s): none yet.
+ * Contributor(s): Blender Foundation 2002-2008
  *
  * ***** END GPL LICENSE BLOCK *****
  */
@@ -34,20 +30,89 @@
 #include <math.h>
 
 #include "DNA_screen_types.h"
+#include "DNA_space_types.h"
 #include "BLI_blenlib.h"
 
 #include "BKE_screen.h"
 
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
+#include "BPY_extern.h"
+
+/* keep global; this has to be accessible outside of windowmanager */
+static ListBase spacetypes= {NULL, NULL};
+
+SpaceType *BKE_spacetype_from_id(int spaceid)
+{
+	SpaceType *st;
+	
+	for(st= spacetypes.first; st; st= st->next) {
+		if(st->spaceid==spaceid)
+			return st;
+	}
+	return NULL;
+}
+
+void BKE_spacetype_register(SpaceType *st)
+{
+	BLI_addtail(&spacetypes, st);
+}
+
+void BKE_spacedata_freelist(ListBase *lb)
+{
+	SpaceLink *sl;
+	
+	for (sl= lb->first; sl; sl= sl->next) {
+		SpaceType *st= BKE_spacetype_from_id(sl->spacetype);
+		
+		if(st && st->free) 
+			st->free(sl);
+	}
+	
+	BLI_freelistN(lb);
+}
+
+/* lb1 should be empty */
+void BKE_spacedata_copylist(ListBase *lb1, ListBase *lb2)
+{
+	SpaceLink *sl;
+	
+	lb1->first= lb2->last= NULL;	/* to be sure */
+	
+	for (sl= lb2->first; sl; sl= sl->next) {
+		SpaceType *st= BKE_spacetype_from_id(sl->spacetype);
+		
+		if(st && st->duplicate)
+			BLI_addtail(lb1, st->duplicate(sl));
+	}
+}
+
+
+/* not area itself */
+void BKE_screen_area_free(ScrArea *sa)
+{
+	
+	BKE_spacedata_freelist(&sa->spacedata);
+	
+	BLI_freelistN(&sa->regionbase);
+	
+	BLI_freelistN(&sa->panels);
+	//	uiFreeBlocks(&sa->uiblocks);
+	//	uiFreePanels(&sa->panels);
+	
+	BPY_free_scriptlink(&sa->scriptlink);
+
+}
 
 /* don't free screen itself */
 void free_screen(bScreen *sc)
 {
-	//XXX unlink_screen(sc); /* bad level call */
-
+	ScrArea *sa;
+	
+	for(sa= sc->areabase.first; sa; sa= sa->next)
+		BKE_screen_area_free(sa);
+	
 	BLI_freelistN(&sc->vertbase);
 	BLI_freelistN(&sc->edgebase);
 	BLI_freelistN(&sc->areabase);
 }
+
+